Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Chiang Rai Qual | 2022/04/17 03:00 | Natthayut Nithithananont v Suphawat Saeoui | 3-6,0-6 |
| ITF M15 Chiang Rai Qual | 2022/04/10 02:00 | S D Prajwal Dev v Suphawat Saeoui | 6-2,6-1 |
| ITF M15 Chiang Rai | 2022/04/04 06:55 | Suphawat Saeoui v Thanapet Chanta | 3-6,1-6 |
| ITF M15 Chiang Rai | 2022/04/03 06:50 | Marut Klaoklaong v Suphawat Saeoui | 5-7,1-6 |
| ITF M15 Chiang Rai Qual | 2022/04/17 12:10 | Issei Okamura v Ishaque Eqbal | 6-4,3-6,10-4 |
| ITF M15 Chiang Rai Qual | 2022/04/10 13:10 | Issei Okamura v Crnokrak, Alexander | 3-6,4-6 |
| ITF M15 Chiang Rai | 2022/04/05 05:45 | Orel Kimhi v Issei Okamura | 6-7,7-6,6-2 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/31 02:45 | Kelly, Dayne v Issei Okamura | 6-0,6-1 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/29 00:40 | Takeuchi, Kento (1987) v Issei Okamura | 3-6,6-4,4-6 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/22 03:05 | Takeuchi, Kento (1987) v Issei Okamura | 5-7,6-2,6-2 |
| ITF M15 Telavi | 2021/08/03 07:45 | Issei Okamura v Aleksandre Bakshi | 6-7,3-6 |
| ITF M25 Telavi | 2021/07/27 09:05 | Zura Tkemaladze v Issei Okamura | 7-6,6-3 |